Class / Patent application number | Description | Number of patent applications / Date published |
607127000 | Axially-mounted helical type | 66 |
20080208306 | IMPLANTABLE MEDICAL LEAD WITH REVERSIBLE FIXATION MECHANISM - An implantable medical lead is provided, which includes an elongated lead body having a distal end portion and a pull cable lumen. A pull extends within the pull cable lumen and is fixedly coupled to the distal end portion. The pull cable is configured to be moved axially relative to the elongated lead body to form a fixation loop. | 08-28-2008 |
20080215127 | Medical Electrical Lead Providing Far-Field Signal Attenuation - A bipolar pacing and sensing lead incorporates a range of active surface areas for each of the anode and cathode electrodes, and a range of inter-electrode spacings between the anode and cathode electrodes which, in combination, provide acceptable near-field signal amplitudes and attenuate the amplitudes of unwanted signals, such as far-field R-waves, far-field P-waves, and T-waves. | 09-04-2008 |
20080262587 | EXTENDABLE AND RETRACTABLE LEAD HAVING A SNAP-FIT TERMINAL CONNECTOR - A lead having an extendable and retractable fixation mechanism has a rotating terminal pin at the terminal end which rotates the fixation mechanism at the distal end. As the terminal pin is rotated, the fixation mechanism is extended or retracted from the distal end of the lead. A threaded collar allows for the fixation mechanism to smoothly extend and retract from the lead, and allows for a 1:1 turn ratio between the terminal pin and the fixation mechanism. A fluoroscopic ring disposed at the distal end of the lead provides information during the implantation process. | 10-23-2008 |
20080262588 | LEAD ASSEMBLY AND METHODS INCLUDING A PUSH TUBE - A lead assembly includes an elongate body having a conductor electrically coupled with an electrode coupled to the elongate body. The lead assembly includes a push tube extending along at least a portion of the elongate body. A distal tip is coupled to the elongate body substantially adjacent to the distal end of the elongate body. The distal tip is sized and shaped to couple with a push tube distal end. In one option, the distal tip includes a seat to receive the push tube distal end. In another option, the seat is a side rail seat and a guide wire extends along the elongate body and is slidably coupled with the side rail seat. The lead assembly includes, optionally, an active fixation device slidably coupled with a portion of the elongate body, and the active fixation device is sized and shaped to couple with the push tube. | 10-23-2008 |
20080288040 | Implantable Lead with a Stimulating Electrode and a Mapping Electrode that is Electrically Disconnectable - An implantable lead for delivering electrical stimuli to a human heart has a stimulating electrode for transmitting electrical stimuli to the myocardium after implantation, and a mapping electrode for use during implantation. The mapping electrode is configured to deliver electrical stimuli to the heart and to sense intrinsic cardiac activity, for the purpose of finding a suitable fixation position in the myocardium. During the implantation procedure, the mapping electrode is electrically connected to the conductor. The lead is configured to electrically disconnect the mapping electrode from the conductor after a suitable fixation position has been determined. | 11-20-2008 |
20080294229 | Helical Electrodes for Intramyocardial Pacing and Sensing - The invention provides for an electrical lead, a steerable sheath and steerable catheter, a sheath and catheter that attach to cardiac tissue via an anchor screw, and a method of pacing, particularly via the atrioventricular septum. | 11-27-2008 |
20080319520 | Endocardial Lead - A device terminating a distal end of a cardiac stimulator lead for transmitting electrical signals from a pacemaker to a location within a heart for stimulating cardiac tissue of the heart said device comprising an electrically conductive helix configured to interact with said cardiac tissue by attachment to said cardiac tissue with a rotating screw motion, said helix having a plurality of helical flights respectively oriented at a screw pitch a tube containing said helix and allowing rotation of said helix in an interior of said tube said tube having an interior post that protrudes between adjacent flights of said helix a rotatable shaft on which said helix is mounted, rotation of said shaft in respective directions causing outward and inward screwing motion of said helix relative to said tube by engagement of said post with said flights of said helix, and said shaft having a stop surface thereon that, when said stop surface reaches said post, interrupts said screw rotation of said helix by abutment of the stop surface against said post, said stop surface being oriented in a plane that deviates less than 450 relative to a radial direction fo said shaft and relative to a direction perpendicular to said screw pitch. | 12-25-2008 |
20090054963 | CARDIAC PACEMAKER - ELECTRODE WITH HELICAL SCREW - A cardiac pacemaker—electrode ( | 02-26-2009 |
20090054964 | PACEMAKER ELECTRODE WITH HELICAL COIL AND FEED LINE COIL - A pacemaker electrode ( | 02-26-2009 |
20090157156 | FIXATION HELIX AND MULTIPOLAR MEDICAL ELECTRODE - A cardiac rhythm management device that includes a lead and a pulse generator. The lead can comprise a lead body, a helical composite electrode, a composite conductor and a proximal connector. The helical composite electrode can have first and second electrodes in a co-axial configuration. The composite connector can electrically connect the first and second electrodes to the proximal connector. The proximal connector can be configured to couple to the pulse generator. | 06-18-2009 |
20090171425 | IMPLANTABLE MEDICAL LEAD AND METHOD FOR THE MANUFACTURE THEREOF - A medically implantable lead configured for insertion into a human or animal body to be attached in the body with its distal end to tissue inside the body, as a rotatable helix at a distal end thereof that can be screwed into the tissue. The helix serves as an attachment of the lead to the tissue as well as a conductor for conducting electrical signals to the tissue through electrically conducting surfaces on the helix. The surfaces of the helix are partly insulated so as to restrict the conducting of signals between the helix and the tissue to desirable regions. The surfaces of the helix facing inwardly, toward an inner bore of the helix, are electrically insulated. In a method for manufacturing such a lead, the wire forming the helix has protrusions in desired areas and the wire including the protrusions is coated with an electrically insulating layer. The protrusions are uncovered from the insulating layer in desired regions. | 07-02-2009 |
20090192580 | MEDICAL ELECTRICAL LEAD WITH BIOCOMPATIBLE LEAD BODY COATING - An intravascular medical electrical lead includes a conformal coating including at least one layer formed from a poly-p-xylylene polymer. The coating is lubricious and provides an effective barrier against moisture and gases preventing degradation of the lead body material preventing corrosion of the conductor. | 07-30-2009 |
20090192581 | ACTIVE FIXATION MEDICAL LEAD - An implantable medical device that includes an elongated body having a proximal end and a distal end, a helical fixation member extending from the distal end of the elongated body, the helical fixation member including a distal tip for affixing the distal end of the elongated body at an implant site, and a tracking member extending from the distal end of the elongated body, through the helical fixation member and outward from the distal tip of the helical fixation member for tracking along an implant pathway during implantation of the implantable medical device. | 07-30-2009 |
20090198314 | LEAD WITH MRI COMPATIBLE DESIGN FEATURES - Implantable medical leads with magnetic shielding and methods of shielding implantable leads from magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An exemplary implantable medical lead includes a helically coiled inner electrode conductor wire, a helically coiled outer electrode conductor wire disposed radially about the inner electrode conductor wire, and at least one layer of insulation that electrically isolates the inner and outer electrode conductor wires. The inner electrode conductor wire can have a hollowed, multifilar configuration including six or more co-radially wound wire filars. The outer electrode conductor wire is electrically isolated from the inner electrode conductor wire, and may have either a single or double filar configuration. | 08-06-2009 |
20090210043 | MEDICAL ELECTRICAL LEAD WITH PROXIMAL ARMORING - A medical electrical lead includes a flexible, insulative body defining a proximal region, an intermediate region, and a distal region. The proximal region is configured to be implanted at a subcutaneous implantation site, and is dimensioned to extend from an implantation location of the pulse generator to a location distal to a cardiovascular system entry site. The intermediate region is configured to extend distally from the proximal region to a location distal to a superior vena cava of a patient's heart, and the distal region is configured to extend distally from the intermediate region within the patient's heart. The lead further includes an armoring layer disposed on the lead body covering at least the proximal region. | 08-20-2009 |
20090210044 | MODULAR, ZONE-SPECIFIC MEDICAL ELECTRICAL LEAD DESIGN - A medical electrical lead configured to be coupled to a pulse generator in a cardiac rhythm management system. The lead comprises a proximal terminal connector configured for coupling the lead to the pulse generator, and a plurality of longitudinally arranged lead segments each configured to exhibit one or more predetermined physical characteristics based on the implantation location for the respective segment. The lead segments may be pre-fabricated as separate modules optimized for the operating environment and/or delivery requirements of the respective segments. The pre-fabricated modules are longitudinally arranged and joined to form the lead. | 08-20-2009 |
20090259283 | SHEATHED LEAD FOR PACING OR DEFIBRILLATION - A cardiac lead assembly includes a sheath disposed over a majority of the outer surface of a cardiac lead body including a fixation helix located at its distal end. The sheath protects the fixation member during delivery of the lead assembly to a target location within a patient's heart. The sheath can include one or more means adapted for splitting the sheath such that the sheath can be removed from about the lead body once the lead has been implanted. | 10-15-2009 |
20090281608 | MEDICAL LEAD COIL CONDUCTOR WITH SPACER ELEMENT - Medical electrical leads equipped with spacer elements and configured for use during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An illustrative medical electrical lead includes a proximal connector, an insulated lead body including at least one electrode, a helically coiled conductor wire, and a helically coiled spacer element interstitially disposed between adjacent turns of the conductor wire. | 11-12-2009 |
20090306753 | LEAD ASSEMBLY AND RELATED METHODS - Defibrillator lead designs and methods for manufacturing a lead having a fibrosis-limiting material covering, a shocking coil electrode, and an implantable lead body are disclosed herein. The shocking coil electrode includes at least one laser welded portion. | 12-10-2009 |
20090312825 | SELECTIVE PARYLENE COATING FOR CARDIAC PACEMAKER ELECTRODES - A stimulation electrode is produced having a porous film layer and being partially coated with an insulating parylene (polyparaxylylene) film, whose insulating film has a dielectric breakdown voltage of greater than 100 V. Parylene is deposited on the entire surface of a porous film coating and then partially removed again by plasma. After the partial removal of the parylene, this porous film still has a capacitance of greater than 15 mF/cm | 12-17-2009 |
20100004723 | HELICAL FIXATION MEMBER WITH CHEMICAL ELUTION CAPABILITIES - The lead includes a helical fixation member coupled to the distal end of the lead body. The helical fixation member has at least one internal reservoir and a plurality of elution ports in fluid communication with the internal reservoir. A therapeutic agent composition is disposed within the internal reservoir. Additionally, the helical fixation member includes a sealed distal end to prevent coring of the cardiac tissue. | 01-07-2010 |
20100004724 | CHRONICALLY-IMPLANTABLE ACTIVE FIXATION MEDICAL ELECTRICAL LEADS AND RELATED METHODS FOR NON-FLUOROSCOPIC IMPLANTATION - Bio-impedance may be used for navigation systems to chronically implant pacing and defibrillation leads in the heart using anon-fluoroscopic position sensing unit (PSU), such as a modified LocaLisa® system from Medtronic Inc., which allows for variable frequency sampling of the position of electrode of a catheter. The PSU injects small AC signals via surface electrodes in three orthogonal axes, each on a slightly different frequency (e.g., near 30 KHz). Indwelling electrodes electrically connected to the PSU resolves the magnitude of induced voltage for each of the three frequencies, thus measuring voltage for each of the three axes. Voltages are divided by induced current to yield impedance in each axis for each electrode. Impedance is proportional to position within the body. Such a system requires that a conductive material, such as a retractable helical tip-electrode, be exposed during implantation. Since the tip is retracted during implantation, this disclosure provides a modified distal portion employing at least one aperture (or “window”) for fluid exposure of the helix-electrode and a deployable internal sleeve for covering the aperture(s) when the helix-electrode is extended. | 01-07-2010 |
20100049290 | MRI COMPATIBLE LEAD - Disclosed herein is an implantable medical lead. In one embodiment, the lead includes a ring electrode, a tip electrode, first and second helically wound coaxial conductor coils, and a distal coil transition. The coils extend between the proximal and distal ends of the lead. The distal coil transition is proximal to the ring electrode and near the distal end and is where the first coil transitions from being outside the second coil proximal of the distal coil transition to being inside the second coil distal of the distal coil transition. | 02-25-2010 |
20100179630 | MEDICAL LEAD WITH STIFFENING COIL - An implantable lead for a medical device includes a lead body having a proximal end and a distal end, an electrical connector coupled to the proximal end of the lead body, an electrode coupled to the distal end of the lead body, and electrically conductive conductor coil extending between the proximal and the distal end of the lead body, the conductor coil wound in a first winding direction under tension. The lead body also includes a plastic ribbon wound around the conductor coil in a second winding direction opposite to the first winding direction without releasing the tension of the conductor coil. | 07-15-2010 |
20100198327 | Active Fixation Implantable Medical Lead Configured to Indicate via Fluoroscopy Embedment of Helical Anchor in Cardiac Tissue - An implantable medical lead for active fixation to cardiac tissue is disclosed herein. The lead may include a lead body distal end, a tissue fixation helical anchor and a structure. The tissue fixation helical anchor may be coupled to the lead body distal end and include a distal tip. The structure may be coupled to the lead body distal end and include a structure distal end including a first radiopaque marker. The structure may be biased to project the structure distal end near the distal tip. When the tissue fixation helical anchor is progressively embedded in the cardiac tissue, the cardiac tissue progressively displaces the structure distal end proximally. | 08-05-2010 |
20100211149 | IMPLANTABLE MEDICAL LEAD HAVING AN ANCHOR PROVIDING ENHANCED FIXATION - An implantable medical lead is disclosed herein wherein the lead employs a helical distal tip anchor having improved fixation capabilities. The implantable medical lead may include a body and a helical anchor. The body may include a distal end and a proximal end. The helical anchor may be at least one of extending and extendable from the distal end. The helical anchor may include at least one loop including first and second straight sides that intersect at a first corner. | 08-19-2010 |
20100222860 | Implantable Leads Having Mechanisms to Impede Over-Rotation of Fixation Mechanisms - An implantable lead includes a lead body, a header body, a fixation mechanism, a rotatable shaft and a rotation limit element. The fixation mechanism is disposed in the header body and is extendable out of the header body for securing the header body to cardiac tissue of the patient. The shaft is provided in the header body and is coupled to the fixation mechanism for translating rotational movement of the shaft into linear displacement of the fixation mechanism. The rotation limit element is disposed in the header body. The rotation limit element engages the header body once the shaft is linearly displaced by a predetermined distance with respect to the header body to prevent further rotation of the shaft and limit additional displacement of the fixation mechanism with respect to the header body. | 09-02-2010 |
20100274338 | Retractable Screw Intracardiac Lead For Cardiac Stimulation and/or Defibrillation - A retractable screw-type stimulation or defibrillation intracardiac lead is disclosed. According to one embodiment, the lead comprises a flexible hollow sheath ( | 10-28-2010 |
20100331942 | MRI COMPATIBLE IMPLANTABLE MEDICAL LEAD AND METHOD OF MAKING SAME - An implantable medical lead is disclosed herein. The implantable medical lead may include a body including an electrical insulation tube, a distal portion with an electrode, and a proximal portion with a lead connector end. The electrical insulation tube may be coaxial with a longitudinally extending center axis of the body. The lead may also include an electrical pathway extending between the electrode and lead connector end, the electrical pathway including an inductor comprising an electrical conductor helically wound directly on an outer circumferential surface of the insulation tube. | 12-30-2010 |
20100331943 | EXTENDABLE/RETRACTABLE LEAD WITH IMPROVED DISTAL SEAL - An implantable lead may have a distal assembly including a coupler, a fixation helix secured to the coupler and a housing in which the fixation helix and the coupler are disposed. The distal assembly may include an annular seal that is disposed between the coupler and the housing and that provides an at least substantially fluid-tight seal between the coupler and the housing. | 12-30-2010 |
20100331944 | ELECTRODE ARRANGEMENT WITH A STIMULATION ELECTRODE FOR THE LEFT VENTRICLE - An electrode arrangement has a stimulation electrode ( | 12-30-2010 |
20110009939 | LAMINATE DISTAL LEAD SEAL WITH TISSUE INGROWTH FEATURE - An implantable lead may include a housing and a laminate distal seal disposed across a distal end of the housing. A coupler and a fixation helix secured to the coupler may be disposed within the housing. The fixation helix may have a retracted position in which the fixation helix does not penetrate the laminate distal seal and an extended position in which the fixation helix has pierced the laminate distal seal and extends therethrough. | 01-13-2011 |
20110015715 | Coronary Venous Pacing Lead And Anchoring Screw System - A system implantable in the coronary venous system, including a pacing lead with an anchoring screw is disclosed. The system includes a stimulation lead ( | 01-20-2011 |
20110022144 | MEDICAL IMPLANTABLE LEAD AND METHOD FOR MANUFACTURING OF SUCH A LEAD - A medical implantable lead to be inserted into a human or animal body and attached to an organ inside the body for monitoring and/or controlling the function of the organ has a header in a distal end, a fixation arrangement and an electrode arranged in the header. The fixation arrangement attaches the distal end of the lead to the organ and the electrode is arranged to transmit or receive electrical signals to or from the organ. The lead also has a connector in a proximal end that includes a connector pin and is adapted to be connected to a monitoring and/or controlling device, and an inner coil, which extends inside an outer casing of the lead and is adapted to transmit electrical signals between the monitoring and/or controlling device and the electrode. The inner coil is attached to the connector pin. The inner coil extends through a bore inside the connector pin and is attached to the connector pin in its proximal end. A method for manufacturing of such a lead is also provided. | 01-27-2011 |
20110034985 | BIPOLAR SCREW-IN LEAD - An implantable active fixation lead includes an outer sheath, a protector member having a peripheral surface extending between its distal and proximal end surfaces with a helical groove formed in the peripheral surface, and a fixation helix integral with the outer sheath. The fixation helix includes a tip end engageable with body tissue and slidably engaged with the helical groove for relative translation and rotation. A longitudinal force on the lead firmly engages the protector member's distal end surface with the body tissue. With the fixation helix initially retracted proximally of the protector member's distal end surface and disengaged from the body tissue, upon application of torque to the outer sheath, the distal end surface of the protector member is moved proximally with respect to the fixation helix which, simultaneously, is extended distally beyond the distal end surface of the protector member to an extended position into engagement with the body tissue. | 02-10-2011 |
20110071610 | CARDIAC LEAD WELDING - An implantable lead may have a distal assembly including a coupler, a terminal pin and a conductive member rotatably secured to both the coupler and the terminal pin. The conductive member may be a fine-wire, multiple-filar coil. The conductive member may be welded to the coupler and/or the terminal pin by welding through banded portions formed within the distal and proximal ends, respectively, of the conductive member. | 03-24-2011 |
20110077726 | MEDICAL LEAD WITH PREFORMED BIAS - A medical electrical lead and methods of implanting medical electrical leads in lumens. Leads in accordance with the invention employ preformed biases to stabilize the lead within a lumen and to orient electrodes in a preferred orientation. | 03-31-2011 |
20110112619 | HELIX FIXATION MECHANISM - An implantable lead may have a distal assembly including a coupler and a fixation helix secured to the coupler. The fixation helix may be formed of a filar having a non-circular cross-sectional profile having a major dimension and a minor dimension. The major dimension may be disposed transversely to a longitudinal axis of the helical electrode. | 05-12-2011 |
20110152990 | MRI COMPATIBLE LEAD EMPLOYING MULTIPLE MINIATURE INDUCTORS - An implantable medical lead is disclosed herein. The lead includes a first electrode and a first electrical circuit. The first electrode is near a distal portion of the lead. The first electrical circuit extends through the lead to the first electrode and includes at least one conductor and a first band stop filter coupled between the distal end of the conductor and the electrode. The first band stop filter includes a first group of inductors in parallel and a second group of inductors in parallel. The first group is in series with the second group. The first group of inductors may include a self resonant L. The first group of inductors may include a self resonant tank LC. The first group of inductors may include a miniature self resonant L or miniature self resonant tank LC. The first group of inductors may include an integrated circuit of L and C components. | 06-23-2011 |
20110160832 | Electrical Metering of Active Fixation Lead Extension - A system and method for assessing coupling of a lead to tissue are provided. The inventive system includes a lead body with an electrode and a fixation element disposed near a distal end of the lead body. The fixation element is configured to anchor the distal end of the lead body in the tissue. The system further includes a meter configured to generate a signal indicative of an amount of energy between the electrode and the fixation element. The amount of energy may comprise capacitance or inductance between the electrode and the fixation element. The system further includes an electronic control unit configured to determine a degree of coupling between the lead and the tissue responsive to the signal. | 06-30-2011 |
20110307043 | APPARATUS AND SYSTEM FOR IMPLANTING AN AUTONOMOUS INTRACARDIAC CAPSULE - A system of an autonomous intracardiac capsule and its implantation accessory. The autonomous capsule ( | 12-15-2011 |
20120078336 | METHOD FOR INDICATING EMBEDMENT OF A HELICAL ANCHOR IN CARDIAC TISSUE VIA FLUOROSCOPY - A method for implanting an active fixation medical lead is disclosed herein. The lead may include a lead body distal end, a tissue fixation helical anchor and a structure. The tissue fixation helical anchor may be coupled to the lead body distal end and include a distal tip. The structure may be coupled to the lead body distal end and include a structure distal end including a first radiopaque marker. The structure may be biased to project the structure distal end near the distal tip. When the tissue fixation helical anchor is progressively embedded in the cardiac tissue, the cardiac tissue progressively displaces the structure distal end proximally. | 03-29-2012 |
20120116489 | Leadless Cardiac Pacemaker with Anti-Unscrewing Feature - A leadless cardiac pacemaker comprises a housing, a plurality of electrodes coupled to an outer surface of the housing, and a pulse delivery system hermetically contained within the housing and electrically coupled to the electrode plurality, the pulse delivery system configured for sourcing energy internal to the housing, generating and delivering electrical pulses to the electrode plurality. The pacemaker further comprises an anti-unscrewing feature disposed on either a fixation device of the pacemaker or on the housing itself. The anti-unscrewing feature can be configured to prevent the fixation device from disengaging the wall of the heart. | 05-10-2012 |
20120158111 | Leadless Pacemaker with Radial Fixation Mechanism - A leadless cardiac pacemaker having a radial fixation mechanism is provided. The cardiac pacemaker can include fixation mechanism separate from a pacing electrode and having a diameter equal to or less than the outer diameter of the pacemaker. The fixation mechanism can allow the pacemaker to be inserted into tissue with less than 2 rotations of the pacemaker to place the pacing electrode in contact with the tissue. In some embodiments, the fixation mechanism can comprise a plurality of hooks or protrusions positioned near a distal portion of the pacemaker. The fixation mechanism(s) can be configured to penetrate the endocardium of the patient and reside mostly within the myocardium. Methods of delivering the leadless cardiac pacemaker into the heart are also provided. | 06-21-2012 |
20120191169 | Trans-Septal Lead Anchoring - Methods, devices and assemblies for anchoring implanted medical electrical leads employed in the stimulating and/or sensing of signals in tissue are disclosed. The devices include a lead anchoring clip having a central hub portion, an anchoring portion for coupling to tissue and a lead engagement mechanism that couples the clip to a medical electrical lead. | 07-26-2012 |
20120197373 | Delivery Catheter Systems and Methods - A delivery system for implanting a leadless cardiac pacemaker into a patient is provided. The cardiac pacemaker can include a docking or delivery feature having a through-hole disposed on or near a proximal end of the pacemaker for attachment to the delivery system. In some embodiments, the delivery catheter can include first and second tethers configured to engage the delivery feature of the pacemaker. The tethers, when partially aligned, can have a cross-sectional diameter larger than the through-hole of the delivery feature, and when un-aligned, can have a cross-sectional diameter smaller than the through-hole of the delivery feature. Methods of delivering the leadless cardiac pacemaker with the delivery system are also provided. | 08-02-2012 |
20120245665 | Pacing, Sensing or Defibrillator Leads for Implantation into the Myocardium - An electrical lead for a cardiac device includes a body having a distal end sized for insertion through a catheter, first and second electrodes extending through the body, with each electrode terminating in a tip having proximal and distal ends and arranged to extend to an area of cardiac tissue. The tips include a fully insulated portion on the proximal and distal ends measuring in a range between 5 percent and 40 percent of the lengths of the tips, and further include an uninsulated intermediate section. The tip of the second electrode includes a helical section surrounding the first electrode and has an insulated portion on an inwardly facing portion surface facing toward the first electrode. The tip of the second electrode also includes a fully insulated portion on the proximal and distal ends measuring in the same or similar percentage range. | 09-27-2012 |
20120265281 | QUADRIPOLAR CONNECTOR ASSEMBLY FOR ACTIVE FIXATION CARDIAC LEADS - An implantable active fixation cardiac lead is disclosed that includes an elongated lead body having opposed proximal and distal end portions and having an interior lumen extending therethrough, an axially rotatable extendable and retractable fixation helix operatively associated with the distal end portion of the lead body, a rotatable in-line quadripolar connector assembly operatively associated with the proximal end portion of the lead body and including an elongated rotatable pin electrode having opposed proximal and distal end portions, and an elongated torque transmitting conductor coil extending through the interior lumen of the lead body and having a proximal end portion connected to the distal end portion of the rotatable pin electrode and a distal end portion connected to the rotatable fixation helix, to facilitate manual activation of the fixation helix. | 10-18-2012 |
20120271394 | LEAD WITH MRI COMPATIBLE DESIGN FEATURES - Implantable medical leads with magnetic shielding and methods of shielding implantable leads from magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are disclosed. An exemplary implantable medical lead includes a helically coiled inner electrode conductor wire, a helically coiled outer electrode conductor wire disposed radially about the inner electrode conductor wire, and at least one layer of insulation that electrically isolates the inner and outer electrode conductor wires. The inner electrode conductor wire can have a hollowed, multifilar configuration including six or more co-radially wound wire filars. The outer electrode conductor wire is electrically isolated from the inner electrode conductor wire, and may have either a single or double filar configuration. | 10-25-2012 |
20120283810 | ACTIVE FIXATION MEDICAL LEAD - An implantable medical device that includes an elongated body having a proximal end and a distal end, a helical fixation member extending from the distal end of the elongated body, the helical fixation member including a distal tip for affixing the distal end of the elongated body at an implant site, and a tracking member extending from the distal end of the elongated body, through the helical fixation member and outward from the distal tip of the helical fixation member for tracking along an implant pathway during implantation of the implantable medical device. | 11-08-2012 |
20130018447 | Lead For Implantable Cardiac Prosthesis, Comprising Means For Protection Against The Thermal Effects Of MRI FieldsAANM OLLIVIER; Jean-FrancoisAACI Villiers-le-BacleAACO FRAAGP OLLIVIER; Jean-Francois Villiers-le-Bacle FRAANM d'Hiver; PhilippeAACI ChatillonAACO FRAAGP d'Hiver; Philippe Chatillon FR - A lead for an implantable cardiac prosthesis, with protection against the thermal effects of MRI fields by terminating the lead head ( | 01-17-2013 |
20130110219 | UNITARY DUAL-CHAMBER LEADLESS INTRA-CARDIAC MEDICAL DEVICE AND METHOD OF IMPLANTING SAME | 05-02-2013 |
20130231728 | ENDOCARDIAL STIMULATION/DEFIBRILLATION SYSTEM OF THE LEFT VENTRICLE - A system for the endocardial stimulation/defibrillation of the left ventricle. This system includes a generator ( | 09-05-2013 |
20130268042 | LEADLESS CARDIAC STIMULATION SYSTEMS - Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrode assemblies that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Also disclosed are various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies. | 10-10-2013 |
20130274847 | MRI Compatible Leadless Cardiac Pacemaker - An implantable battery powered leadless pacemaker or biostimulator is provided that may include any of a number of features. One feature of the biostimulator is that it safely operates under a wide range of MRI conditions. One feature of the biostimulator is that it has a total volume small enough to avoid excessive image artifacts during a MRI procedure. Another feature of the biostimulator is that it has reduced path lengths between electrodes to minimize tissue heating at the site of the biostimulator. Yet another feature of the biostimulator is that a current loop area within the biostimulator is small enough to reduce an induced current and voltage in the biostimulator during MRI procedures. Methods associated with use of the biostimulator are also covered. | 10-17-2013 |
20130325094 | ACTIVE FIXATION MEDICAL ELECTRICAL LEAD - A medical electrical lead having an elongated lead body and a fixation helix extending along a generally helical axis, mounted around the outer circumference of the lead body. The fixation helix has a free end spaced from and extending from the lead body for less than the circumference of the lead body. The lead body includes an additional component which provides a rotation stop extending from the outer circumference of the lead body and provides stop surface generally perpendicular to the axis of the helix. | 12-05-2013 |
20140039592 | LEAD SHAPED FOR STIMULATION AT THE BASE LEFT VENTRICLE - Disclosed herein are a variety of implantable medical leads for coupling to an implantable pulse generator and targeted stimulation of the lateral and posterior basal left ventricular region of a patient heart. As one example, the lead may include a tubular body including proximal section, an intermediate section and a distal section. The intermediate section biases into a generally S-shaped or sinusoidal-shaped configuration when the intermediate section is in a free or non-restricted state. The proximal section proximally extends from the intermediate section to a proximal end configured to electrically couple to the implantable pulse generator. The distal section biases into a generally straight linear shaped configuration when the distal section is in a free or non-restricted state. | 02-06-2014 |
20140107755 | LEFT VENTRICULAR INTRASEPTAL STIMULATION LEAD - A stimulation lead is disclosed. This lead comprises a lead body having a lumen housing an inner conductor, the conductor being axially and rotationally movable within the lumen, and coupled to a generator of an active implantable medical device. The lead also has a helical anchoring screw extending from a distal end configured to penetrate target tissue, and a stimulation needle electrically coupled to the conductor and comprising at its distal end an active free portion with at least one stimulation electrode for application of pacing pulses to the target tissue. The stimulation needle is axially movable between a retracted position inside the tubular body, and a deployed position with the active free portion of the needle emerging out of the tubular body, utilizing an actuating mechanism for moving the needle from its retracted position to its deployed position under the effect of rotary movement relative to the lead body. | 04-17-2014 |
20140107756 | IMPLANTABLE CARDIAC STIMULATION LEAD FOR IMPLANTATION ALONG THE SEPTAL WALL AND/OR THE FREE WALL OF THE LEFT VENTRICULAR - An implantable cardiac stimulation lead for implantation along the septal wall and/or the free wall of the left ventricular is disclosed. The lead is a microlead formed in its distal portion by a microcable with an active portion comprising a series of exposed areas forming the stimulation electrodes. This lead is implanted by an accessory with a needle having a puncture pointed free end and an opposite end mounted on a gripping end tip, and a releasable device for holding the microcable along the length of the needle. The microlead is introduced by injection of the microcable with penetration of the needle into the wall thickness of the interventricular septum or in the thickness of the free wall of the left ventricle, below the surface and along this wall between the apex region the atrial region. | 04-17-2014 |
20140114387 | CHATTER-FREE ACTIVE FIXATION LEAD - An implantable therapy lead includes a tubular body, an obturator, and a helical anchor electrode. The obturator is displaceably supported on a distal end of the tubular body between a recessed position and an extended position. When the obturator is in the extended position, the extreme distal tip of the tissue penetrating point of the helical anchor electrode contacts an outer surface of the obturator in a manner that prevents the extreme distal tip from being capable of tissue penetration significant enough to allow the helical anchor electrode to be screwed into the heart tissue. When the obturator is in the recessed position, the extreme distal tip no longer contacts the outer surface of the obturator and the extreme distal tip is positioned relative to the outer surface of the obturator so as to allow the extreme distal tip to penetrate the heart tissue. | 04-24-2014 |
20140296955 | Active Cardiac Electrical Lead - An active bipolar cardiac electrical lead includes a helical anchor electrode, a tip electrode pin, an intermediate connection mount, a ring electrode, and a tip housing. The tip electrode pin engages an inner conductor coil at a proximal end and engages a proximal end of the helical anchor electrode at a distal end. The intermediate connection mount defines an axial lumen therethrough, a proximal fitting, a cylindrical flange, and a distal fitting. The ring electrode has an exposed section that sleeves over and connects with the proximal fitting of the intermediate connection mount and has a proximal sleeve that engages with an outer conductor coil and an outer sheath of the lead. The tip housing defines an axial bore that houses the helical anchor electrode and a distal portion of the tip electrode pin. A proximal portion of the tip electrode pin is housed within the axial lumen of the intermediate connection mount. A proximal end of the tip housing sleeves over and directly engages the distal fitting of the intermediate connection mount. | 10-02-2014 |
20150025612 | SYSTEM AND METHODS FOR CHRONIC FIXATION OF MEDICAL DEVICES - Devices or methods such as for stimulating excitable tissue or sensing physiologic response or other signals that can use chronic fixation mechanism are described. An implantable apparatus can comprise an electrostimulation electrode assembly that can include a primary fixation member and a secondary fixation member. The primary fixation member can be actively engaged or affixed to a target tissue of a patient, and the second fixation member can be biased against the target tissue, collapsed or compressed against the target tissue when the primary fixation member is affixed to the target tissue. The electrostimulation electrode assembly can also include at least one electrode such as to contact heart or other excitable tissue such as to deliver chronic electrostimulation or sensing physiologic responses. | 01-22-2015 |
20150051682 | LEADLESS CARDIAC PACEMAKER WITH DELIVERY AND/OR RETRIEVAL FEATURES - An implantable leadless cardiac pacing device and associated delivery and retrieval devices. The implantable device includes a docking member extending from the proximal end of the housing of the implantable device configured to engage with the delivery and/or retrieval device to facilitate delivery and/or retrieval of the implantable leadless cardiac pacing device. | 02-19-2015 |
20150105847 | LEAD FOR IMPLANTABLE CARDIAC PROSTHESIS, INCLUDING PROTECTION AGAINST THE THERMAL EFFECTS OF MRI FIELDS - A heat dissipating housing to be positioned at a distal end of a stimulation/defibrillation lead, the housing including a housing body having a distal contact face at a distal end, an inner wall, and an outer wall. The housing further includes an anchoring screw, wherein at least a portion of the anchoring screw extends axially from the distal end of the housing body. The anchoring screw is configured to secure the distal contact face in contact with tissue of a patient to form a thermal bridge between the tissue and the housing body. The housing body is electrically insulated and thermally conductive to dissipate heat transferred through the thermal bridge to the outer wall of the housing body. | 04-16-2015 |
20150320996 | METHOD AND APPARATUS FOR DETERMINING SUITABILITY OF A LEAD IMPLANT LOCATION - Method and systems of determining adequacy of fixation of a medical lead type having a fixation helix are disclosed. The lead of the medical lead type is placed at a desired location within a patient's body and the fixation helix is screwed into tissue at that location. One or more parameters, associated with the lead, are measured at the location. Based upon the measured one or more parameters, determining a number of turns that the helix is embedded into the tissue at the location. | 11-12-2015 |
20160059006 | CARDIAC LEAD WITH SNAP-LOCK CONSTRUCTION OF INTEGRATED DISTAL TIP ASSEMBLY - An implantable therapy lead is disclosed herein. The therapy lead includes an integrated distal tip assembly with a header. At least one of a helix-shaft assembly, a ring electrode or a marker ring is directly coupled to the header via a snap-lock coupling arrangement. | 03-03-2016 |